EP0845695B1 - Verfahren zur Herstellung von Flüssigkristall-Displays auf Kunststoff-Folien unter Verwendung von bistabilen Flüssigkristallen - Google Patents
Verfahren zur Herstellung von Flüssigkristall-Displays auf Kunststoff-Folien unter Verwendung von bistabilen Flüssigkristallen Download PDFInfo
- Publication number
- EP0845695B1 EP0845695B1 EP97120259A EP97120259A EP0845695B1 EP 0845695 B1 EP0845695 B1 EP 0845695B1 EP 97120259 A EP97120259 A EP 97120259A EP 97120259 A EP97120259 A EP 97120259A EP 0845695 B1 EP0845695 B1 EP 0845695B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- liquid crystal
- substrate
- display
- applying
- layer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Classifications
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/133305—Flexible substrates, e.g. plastics, organic film
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B42—BOOKBINDING; ALBUMS; FILES; SPECIAL PRINTED MATTER
- B42D—BOOKS; BOOK COVERS; LOOSE LEAVES; PRINTED MATTER CHARACTERISED BY IDENTIFICATION OR SECURITY FEATURES; PRINTED MATTER OF SPECIAL FORMAT OR STYLE NOT OTHERWISE PROVIDED FOR; DEVICES FOR USE THEREWITH AND NOT OTHERWISE PROVIDED FOR; MOVABLE-STRIP WRITING OR READING APPARATUS
- B42D25/00—Information-bearing cards or sheet-like structures characterised by identification or security features; Manufacture thereof
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07701—Constructional details, e.g. mounting of circuits in the carrier the record carrier comprising an interface suitable for human interaction
- G06K19/07703—Constructional details, e.g. mounting of circuits in the carrier the record carrier comprising an interface suitable for human interaction the interface being visual
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K19/00—Record carriers for use with machines and with at least a part designed to carry digital markings
- G06K19/06—Record carriers for use with machines and with at least a part designed to carry digital markings characterised by the kind of the digital marking, e.g. shape, nature, code
- G06K19/067—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components
- G06K19/07—Record carriers with conductive marks, printed circuits or semiconductor circuit elements, e.g. credit or identity cards also with resonating or responding marks without active components with integrated circuit chips
- G06K19/077—Constructional details, e.g. mounting of circuits in the carrier
- G06K19/07749—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card
- G06K19/07766—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card comprising at least a second communication arrangement in addition to a first non-contact communication arrangement
- G06K19/07769—Constructional details, e.g. mounting of circuits in the carrier the record carrier being capable of non-contact communication, e.g. constructional details of the antenna of a non-contact smart card comprising at least a second communication arrangement in addition to a first non-contact communication arrangement the further communication means being a galvanic interface, e.g. hybrid or mixed smart cards having a contact and a non-contact interface
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- B42D2033/26—
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- B42D2035/20—
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
- G02F1/133509—Filters, e.g. light shielding masks
- G02F1/133512—Light shielding layers, e.g. black matrix
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- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/137—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering
- G02F1/139—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent
- G02F1/141—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells characterised by the electro-optical or magneto-optical effect, e.g. field-induced phase transition, orientation effect, guest-host interaction or dynamic scattering based on orientation effects in which the liquid crystal remains transparent using ferroelectric liquid crystals
Definitions
- Liquid crystal displays are increasingly being used on plastic film substrates manufactured, as opposed to on glass substrates manufactured displays a much lower weight and have greater flexibility. So that's hers Application especially as classified ad elements for mobile Small devices such as cell phones or credit cards interesting.
- Such displays with bistable liquid crystals are, for example from EP 0 528 397 A2, EP 0 352 637 A2 or known from EP 0 336 321 A2.
- the known displays show however no protective layers to prevent interactions of the liquid crystal with the plastic material of the Substrates. Therefore, gas formation can occur with these displays or gluing inside the liquid crystal cells come.
- the present invention now proposes a method with which the production of functionally stable liquid crystal displays on plastic films using bistable Liquid crystals is possible.
- the procedure has the steps according to claim 1.
- liquid crystal display according to the invention are as Liquid crystals SCT liquid crystals (stabilized colesteric texture) or an FLC liquid crystal (ferroelectric liquid crystal) is used.
- the FLC crystals stand out characterized by high stability. With these crystals manufactured displays on glass substrates, however, has a Display sensitivity to bending shown. All the more surprising it is now that displays with FLC crystals on it flexible plastic films can be made and there are far less prone to bending. The result leaves can be explained by the fact that the plastic film is much thinner and is more elastic than a glass substrate.
- the inorganic protective layer which is an interaction of Prevents liquid crystal and plastic material is out Tantalum pentoxide formed. Without such a protective layer it through chemical reactions between liquid crystal and Substrate film for gas formation or for gluing inside of the liquid crystal cells come. It also offers Protective layer protection against gas and liquid permeation through the plastic substrate material.
- the transparent one Conductive layer can expediently from indium tin oxide (ITO). Leaves as an insulation layer use tantalum pentoxide again. This The primary function of the insulation layer is to increase it the breakdown strength of the display cell.
- orientation layer by dusting or vapor deposition of organic oxides such.
- SiO x or Al x N y can be applied obliquely to the substrate surface. This enables excellent orientation results to be achieved.
- orientation layer can be post-treated if necessary, so that a high stability of the liquid crystal can be ensured.
- the black matrix instead of the inner substrate surface can also be applied to the outer substrate surface. Because of the much thinner compared to glass substrates As a result, there is hardly any parallax error in plastic film between black matrix and electrode structure.
- the Black Matrix can make sense on the outer surfaces Printing or spray painting techniques are applied or but also by laminating a printed film.
- Ferroelectric liquid crystal displays can use the black matrix also on the outer surface of the base substrate applied between this and a reflective polarizer become.
- the displays of the invention can Total thickness of less than 0.5 mm and are suitable especially for installation in plastic cards, such as check cards, where without a battery information like credit, available telephone units, etc. should be displayed. at This application has its positive properties such as bistability, Flexibility, unbreakability, low sensitivity to pressure and viewing angle independence next to the thin one Construction especially for carrying.
- the invention therefore also includes a display according to claim 14 and a plastic card according to claim 15 with a display according to the invention, thereby is characterized that it has induction loops, via which the switching voltage and switching energy for switching the information shown on the display without contact can be inductively coupled.
- the plastic card according to claim 16 a thin film antenna over which the switching voltage and switching energy to switch over to information shown on the display for receiving electromagnetic Radiation can be coupled in contactlessly.
- ferroelectric liquid crystals can be used for the display ads because these with very low voltages ( ⁇ 5 volts) and low Have switching energies switched.
- the execution of the check card with a thin-film antenna is also suitable for far field coupling for switching the information on the display.
- the method according to the invention is also suitable for transferability to production with large numbers of items.
- the layers can be applied using continuous sputtering techniques.
- the application of the conductive structured layer can be done using printing techniques, e.g. B. screen printing or offset printing.
- the liquid crystal can also be applied using printing techniques.
- the cover substrate can be laminated on in a rolling process.
- the cover substrate can then be pressed on with a pressure stamp, so that after the sealing process the internal cell pressure is lower than the atmospheric pressure. Further advantages with regard to rational production are possible by using liquid crystals, into which spacers with sufficient density have already been mixed, so that there is preferably an area distribution of 10 4 to 10 5 / mm 2 .
- the liquid crystal displays thus produced are insensitive to deflection and pressure load and keep the inscribed image information without expenditure of energy. Because of these properties, they are particularly suitable for use as reflective or transmissive displays in small mobile devices where a small volume and low Weight, low power consumption and robustness are desirable are variable, especially for mobile units Display information without an energy source permanently.
- Fig. 1 shows a transport unit 10 on which a liquid crystal display to various stations during its manufacturing process is transported.
- a plastic film substrate 11 under a first pressure roller 12 transported through it, the transparent conductive Electrodes printed on the substrate 11.
- the electrode structure with UV or infrared light hardened.
- an orientation layer for the liquid crystal by oblique dusting or Evaporated (not shown) before substrate 11 is passed under a second pressure roller 14 which together with an adhesive frame mixed in a liquid crystal Spacers printed.
- a third pressure roller 15 laminates a film cover substrate 16 and in a work step 14 with a pressure stamp 17th with an air cushion, the display cell is pressed with overpressure and then the adhesive between the top and base substrates 16, 11 cured by means of UV or infrared radiation.
- a black matrix can then be applied to one of the substrate surfaces be laminated on. However, such a black matrix is can also be applied to the inside of the substrates 11, 16.
- Fig. 2 shows a cross section through a section of a Liquid crystal displays 20.
- This is a Display with a ferroelectric liquid crystal 21.
- the Liquid crystal 21 is between two film substrates 22 and 23 arranged. Are just above the film substrates each protective layers 24, 25 made of tantalum pentoxide and then an orientation layer 26 for the liquid crystal applied. The transparent ones can also be seen Electrodes 27 made of indium tin oxide.
- spherical spacers 28 are mixed in, which are a constant distance between the two substrates 22 and 23 guarantee.
- Each cell of the liquid crystal display 20 is provided with an adhesive frame 29 which seals the interior of the cell closes to the outside, with a negative pressure inside the cell compared to atmospheric pressure.
- the display shown 20 has a polarizer 30 above the cover electrode and on the underside of the basic substrate 23 a black matrix 31, a polarizer 33 and a reflector 32.
- Fig. 3 shows a top view of a plastic card 40 with a Liquid crystal display 41 with a bistable liquid crystal, preferably a ferroelectric liquid crystal.
- a dashed line Flat coil 42 Integrated into the card 40 is a dashed line Flat coil 42, the connecting lines 43 with a Control electronics unit 44 connected to the display 41 is.
- the flat coil 42 is used for contactless inductive Coupling in for switching the information of the liquid crystal display 41 necessary switching voltages.
- the flat coil 42 can also use a thin-film antenna become.
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- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Theoretical Computer Science (AREA)
- Nonlinear Science (AREA)
- Liquid Crystal (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Optics & Photonics (AREA)
Description
- Fig. 1
- eine schematische Darstellung einer Fertigungsanlage für Flüssigkristall-Displays mit bistabilen Flüssigkristallen;
- Fig. 2
- einen Querschnitt durch ein Flüssigkristall-Display mit Foliensubstraten und einem bistabilen Flüssigkristall;
- Fig. 3
- eine Draufsicht auf ein Ausführungsbeispiel einer erfindungsgemäßen Plastikkarte.
Claims (16)
- Verfahren zur Herstellung von Flüssigkristall-Displays auf Kunststoff-Folien unter Verwendung von bistabilen Flüssigkristallen mit den Schritten:Aufbringen einer Schutzschicht (24, 25) aus Tantalpentoxid auf ein transparentes Grundsubstrat (23) und ein Decksubstrat (22), vorzugsweise einer Dicke von 50 bis 150 µm, wobei die Substrate aus Kunststoff-Folie bestehen;Aufbringen einer elektrisch leitfähigen organischen oder anorganischen transparenten Schicht (27) auf Grund - und Decksubstrat;Strukturierung der leitfähigen Schichten zu Ansteuerelektroden;Aufbringen einer Black-Matrix (31) zur Ausblendung von elektrisch nicht angesteuerten Flächen des Displays zur Kontrasterhöhung auf eine der Oberflächen des Grund- oder Decksubstrats;Aufbringen einer ganzflächigen Isolationsschicht aus organischem oder anorganischem Material auf Grund - und Decksubstrat;Aufbringen einer Orientierungsschicht (26) aus organischem oder anorganischem Material zur Orientierung der Moleküle des Flüssigkristalls auf Grund - und Decksubstrat;Aufbringen von Abstandshaltern (28);Aufbringen des Foliendecksubstrats (22) und Verkleben mit dem Grundsubstrat (23);Einfüllen des Flüssigkristalls (21) der aus SCT-Flüssigkristallmaterial oder aus FLC-Flüssigkristallmaterial besteht;Versiegeln der Flüssigkristallzelle unter Druckeinwirkung, sodass der Zelleninnendruck kleiner als der Atmosphärendruck ist.
- Verfahren nach Anspruch 1, dadurch gekennzeichnet, dass die transparente leitfähige Schicht (27) aus Indium-Zinn-Oxid (ITO) gebildet wird .
- Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Isolationsschicht aus Tantalpentoxid gebildet wird.
- Verfahren nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass die Orientierungsschicht (26) durch Aufstäuben oder Aufdampfen von vorzugsweise SiOx schräg zur Substratoberfläche aufgebracht wird.
- Verfahren nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass das Aufbringen der leitfähigen strukturierten Schicht (27) mit Hilfe von Drucktechniken wie Siebdruck oder Offsetdruck erfolgt.
- Verfahren nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das Aufbringen des Flüssigkristalls (21) mit Hilfe von Drucktechniken wie Siebdruck oder Offsetdruck erfolgt, bevor die Substrate miteinander verklebt werden.
- Verfahren nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass in den Flüssigkristall (21) Abstandshalter (28) eingemischt sind.
- Verfahren nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das Decksubstrat (22) in einem Rollprozess auflaminiert wird.
- Verfahren nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass das Decksubstrat (22) beim Verkleben und Versiegeln mit einem Druckstempel (17) aufgepresst wird, sodass nach dem Siegelvorgang der Druck innerhalb der Zelle kleiner als der Atmosphärendruck ist.
- Verfahren nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Black-Matrix (31) auf eine der äußeren Substratoberflächen aufgebracht wird.
- Flüssigkristall-Display (20) mit einem bistabilen SCT oder FLC Flüssigkristall (21), Austeuerelektroden aus einem leitfähigen Material, einer ganzflächigen Isolationsschicht, einer Orientierungsschicht, Abstandshaltern und einem substrat (23) sowie einen Decksubstrat (22), wobei die Substrate (22, 23) aus Kunststoff-Folie bestehen, dadurch gekennzeichnet, dass eine Schutzschicht (24, 25) aus Tantalpentoxid auf das Grundsubstrat (23) und das Decksubstrat (2) aufgebracht ist.
- Flüssigkristall-Display nach Anspruch 11 mit einem bistabilen, ferroelektrischen Flüssigkristall, dadurch gekennzeichnet, dass die Textur des Flüssigkristalls durch eine Niederfrequenz-Wechselfeldbehandlung in eine lagenaufgerichtete "Bookshelf"-Textur umgewandelt ist.
- Flüssigkristall-Display nach Anspruch 11 oder 12, dadurch gekennzeichnet, dass das Display (20) eine Gesamtdicke von weniger als 0,5 mm aufweist.
- Anzeige dadurch gekennzeichnet, dass ein Flüssigkristall-Display nach einem der Ansprüche 11 bis 13, als Informationsanzeige in eine Plastikkarte eingebaut ist.
- Plastikkarte mit einem Flüssigkristall-Display nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, dass sie Induktionsschleifen aufweist, die der berührungslosen induktiven Einkupplung der für das Umschalten der auf dem Display dargestellten Information notwendigen Schaltspannung und Schaltenergie dienen.
- Plastikkarte mit einem Flüssigkristall-Display nach einem der Ansprüche 11 bis 13, dadurch gekennzeichnet, dass sie eine Dünnschichtantenne aufweist, über die durch Empfang elektromagnetischer Strahlung die notwendige Schaltspannung und Schaltenergie zum Umschalten der auf dem Display dargestellten Information berührungslos einkoppelbar ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19649761A DE19649761C2 (de) | 1996-11-30 | 1996-11-30 | Verfahren zur Herstellung von Flüssigkristall-Displays auf Kunststoff-Folien unter Verwendung von bistabilen Flüssigkristallen |
DE19649761 | 1996-11-30 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0845695A2 EP0845695A2 (de) | 1998-06-03 |
EP0845695A3 EP0845695A3 (de) | 1998-12-23 |
EP0845695B1 true EP0845695B1 (de) | 2002-10-16 |
Family
ID=7813280
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97120259A Expired - Lifetime EP0845695B1 (de) | 1996-11-30 | 1997-11-19 | Verfahren zur Herstellung von Flüssigkristall-Displays auf Kunststoff-Folien unter Verwendung von bistabilen Flüssigkristallen |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP0845695B1 (de) |
DE (1) | DE19649761C2 (de) |
Cited By (2)
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DE102005030626A1 (de) * | 2005-06-30 | 2007-01-04 | Bundesdruckerei Gmbh | Sicherheitsdokument mit integriertem Schaltkreis und Anzeigesystem |
DE102005030627A1 (de) * | 2005-06-30 | 2007-01-04 | Bundesdruckerei Gmbh | Sicherheits- oder Wertdokument mit einer Einrichtung zur kontaktlosen Kommunikation mit einem externen Lese- und/oder Schreibgerät |
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DE19822150C2 (de) * | 1998-05-16 | 2003-09-11 | Univ Stuttgart | Flüssigkristalldisplay |
RU2179337C2 (ru) * | 1999-03-01 | 2002-02-10 | ОПТИВА, Инк. | Смарт-карта (электронная карта) и способ ее изготовления |
DE19921133B4 (de) * | 1999-05-07 | 2008-07-03 | Universität Stuttgart | Verfahren zur Herstellung einer bistabilen, flexiblen Flüssigkristallanzeige |
DE19923138C1 (de) * | 1999-05-20 | 2000-11-02 | Giesecke & Devrient Gmbh | Display zur Integration in kartenförmige Trägermedien |
DE10065748A1 (de) * | 2000-12-29 | 2002-07-18 | Infineon Technologies Ag | Datenträgeranordnung mit einer Anzeigeeinrichtung |
US8629577B2 (en) | 2007-01-29 | 2014-01-14 | Powermat Technologies, Ltd | Pinless power coupling |
DE102007016777B4 (de) * | 2007-04-04 | 2018-11-22 | Bundesdruckerei Gmbh | Sicherheits- oder Wertdokument |
EP2266123B1 (de) | 2008-03-17 | 2018-10-10 | Powermat Technologies Ltd. | Induktives übertragungssystem |
KR20110044734A (ko) | 2008-06-02 | 2011-04-29 | 파우워매트 엘티디. | 전기기기에 설치된 파워아울렛 |
US11979201B2 (en) | 2008-07-02 | 2024-05-07 | Powermat Technologies Ltd. | System and method for coded communication signals regulating inductive power transmissions |
US8188619B2 (en) | 2008-07-02 | 2012-05-29 | Powermat Technologies Ltd | Non resonant inductive power transmission system and method |
US8981598B2 (en) | 2008-07-02 | 2015-03-17 | Powermat Technologies Ltd. | Energy efficient inductive power transmission system and method |
CA2730194A1 (en) * | 2008-07-08 | 2010-01-14 | Powermat Ltd. | Display device |
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-
1996
- 1996-11-30 DE DE19649761A patent/DE19649761C2/de not_active Expired - Fee Related
-
1997
- 1997-11-19 EP EP97120259A patent/EP0845695B1/de not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102005030626A1 (de) * | 2005-06-30 | 2007-01-04 | Bundesdruckerei Gmbh | Sicherheitsdokument mit integriertem Schaltkreis und Anzeigesystem |
DE102005030627A1 (de) * | 2005-06-30 | 2007-01-04 | Bundesdruckerei Gmbh | Sicherheits- oder Wertdokument mit einer Einrichtung zur kontaktlosen Kommunikation mit einem externen Lese- und/oder Schreibgerät |
Also Published As
Publication number | Publication date |
---|---|
DE19649761A1 (de) | 1998-06-10 |
DE19649761C2 (de) | 2003-04-03 |
EP0845695A3 (de) | 1998-12-23 |
EP0845695A2 (de) | 1998-06-03 |
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